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LTM8045 Datasheet(PDF) 8 Page - Linear Technology

Part # LTM8045
Description  36VIN, 8.5A Buck-Boost 關Module Regulator
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM8045 Datasheet(HTML) 8 Page - Linear Technology

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LTM8055
8
8055fb
For more information www.linear.com/LTM8055
PIN FUNCTIONS
IOUTMON (Pin L2): Output Current Monitor. This pin pro-
duces a voltage that is proportional to the voltage between
VOUT and IOUT. IOUTMON will equal 1.2V when VOUT – IOUT
= 58mV. This feature is generally useful only if a current
sense resistor is applied between VOUT and IOUT. This is
a high impedance output. Use a buffer to drive a load.
IINMON (Pin L3): Input Current Monitor. This pin produces
a voltage that is proportional to the voltage between IIN
and VIN. IINMON will equal 1V when IIN – VIN = 50mV. This
feature is generally useful only if a current sense resistor
is applied between VIN and IIN.
RUN(PinL4):LTM8055Enable.RaisetheRUNpinvoltage
above 1.2V for normal operation. Above 1.2V (typical), but
below 6V, the RUN pin input bias current is less than 1μA.
Below 1.2V and above 0.3V, the RUN pin sinks 3μA so
the user can define the hysteresis with the external resis-
tor selection. This will also reset the soft-start function.
If RUN is 0.3V or less, the LTM8055 is disabled and the
SVIN quiescent current is below 1μA.
IIN (Pin L9): Input Current Sense. Tie this pin to the input
current sense resistor. The input average current sense
threshold is 50mV, so the LTM8055 will regulate the input
current to 50mV/RSENSE, where RSENSE is the value of the
input current sense resistor in ohms. Tie to VIN when not
used.Keepthispinwithin±0.5VofVINunderallconditions.
BLOCK DIAGRAM
0.2µF
4.7µH
0.47µF
50V
0.1µF
CTL
COMP
RT
SYNC
100k
2V
100k
IOUTMON
8055 BD
IINMON
CLKOUT
FB
IOUT
VOUT
SS
GND
RUN
IIN
VIN
SVIN
BUCK-BOOST CONTROLLER
LL
MODE


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